Boring machine



April 26, 1932. E, T] SHNN 1,855,999

' BORING MACHINE Filed May 29, 1931 4 Sheets-Sheet l INVENTOR gZ/wa/Z/ AY ZiIZIZ ATTORNEY Aprll 26, 1932. E. T. SHINN 1,855,999

BORING MACHINE Fiied May 29, 1931 4 SheetsSheet 2 INVENTORT (ll .5

ATTORNEY A u m Mi 4 M 47 $21. a y 6 6 WITNESSES @M 7/0 2 a. Q

E. T. SHINN BORING MACHINE April 26, 1932.

, 1931 4 Sheets-Sheet 3 Filed May 29 WITNESSES Zwg/Zb AZ @977 n R. Y 2 M 3 w W4 n W April 26, 1932. E. T. SHINN BORING MACHINE mvsmog Eda/a2 4 5/2121]? Y B Wig I ATTORNEY WITNESSES a excavating bucket.

Patented Apr. 26, 1932 EDWARD T. SHINN, OF HARRISON, NEW JERSEY BORING MACHINE Application filed May 29, 1931.

An object of the invention is to provide a boring machine having a body with a motor forrotating an excavating bucket, the said body being movable vertically with the said The excavating bucket ias bottom members hinged to its body and the bottom members are connected with a supporting cable to permit of the opening of the bottom members when the body is W supported by means provided.

Another object of the invention is to provide a shell body enclosing a. motor for rotating an excavating bucket disposed at the shell body, the excavating bucket having movable bottom members which are connected with a supporting cable and there being ad-. justable means for supporting the shell body.

Still another object of the invention is to provide a casing in which the shell body is adapted to move, there being hooks on the casing for engaging and supporting the shell body in the casing when the supporting cable is lowered to open the movable bottom members on the excavating bucket. A cross bar is mounted on the means connecting the movable bottom members of the excavating bucket with the supporting cable and this cross bar has spring-pressed members for securing the cross bar to the shell body, the spring-pressed members engaging members at the casing when the cable is drawn upwardly to move the spring-pressed members into inoperative position, thereby permitting the movable bot tom members of the excavating bucket to open when the cable is lowered.

4 members in side elevation,

Figure 2 is an enlarged sectional elevation on the line 22 of Figure 1,

Figure 3 is an enlarged sectional view on the line 33 of Figure 1,

Figure 4 is an enlarged sectional side elevation illustrating the excavating bucket, the

Serial No. 541,030.

shell body and the casing with the elements associated therewith,

Figure 5 is a sectional view similar to the sectional view illustrated in Figure 4, but with the shell body supported in the casing and with the hinged bottom members of the excavating bucket opened,

Figure 6 is an enlarged sectional elevational view illustrating the guide means connecting the extension of the casing with the telescopic members which carry the shell body, and prevent the shell body from rotating relatively to the casing,

Figure 7 is an enlarged fragmentary View illustrating the manner in which the hooks for supporting the shell body are mounted on the casing,

Figure 8 is a sectional view on the line 8-8 of Figure 7,

Figure 9 is an enlarged fragmentary view illustrating the end of a spring-pressed member on the cross bar with its roller,

Figure 10 is a sectional elevation showing a modified form of the invention, and s Figure 11 is a sectional View similar to the sectional view illustrated in Figure 10, but showing the shell body disposed in the casing.

By referring to the drawings it will be seen that a casing 15 is supported by a beam 16, the beam 16 being preferably secured to a beam 17 which has a pivot 18 on which are mounted brackets 19 secured to an extension 20 of the casing 15. Disposed below the casing 15, and adapted to move into the casing, there is a shell body 21 having an extension 22, the extension 22 being provided with guides 23 disposed in guideways 24k in a telescopic member 25, the telescopic member 25 having guides 26 which are disposed in guideways 27 on the extending member 20 of the casing 15. It will, therefore, be understood that, while the telescopic member 25 will permit the lowering of the shell body 21 relatively to the casing15, the rotation of the shell body 21 relatively to the casing 15 will be prevented by the guides and guideways which have been described.

As best illustrated in Figures 4 and 5 of the drawings, there are guideways 28 in the of the shaft 36 a collar'37, the collar 37 being integral with or secured to a disc 38 having a flange 39 with inner teeth 40, best shown in Figure 8 of the drawings, with which mesh gears 41 mounted to turn on studs 42 which are secured in the disc 38.

Meshing with these gears 41 there is a gear 43 which is secured to a haft 44 of the motor 30. It will be seen from the above description that the electric motor 30, which is disposed in the shell body 21, is adapted torotate the shaft 36 through the gears 43 and 41 and the disc 38.

The shaft 36 is disposed in a bearing 45, which is adapted to rotate in an opening 46 in the bottom 47 of the shell body 21.

This shaft 36 is angular in cross-section and the bearing 45 is also angular in cross-section and rotates with the shaft 36, the shaft 36 extending below the bottom 47 of the shell body 21, through an opening 48 of an excavating bucket 49. The excavating bucket 49 is secured to the bearing by bolts 45. The excavating bucket 49 will, therefore, be rotated by the shaft 36 and the bearin 45.

. It will be understood, however, that while the shell body 21 forms an extension on the excavating bucket 49.

Secured to the lower terminal of the shaft 36 there are rods or members 50 which are articulated at 51 to the bottom members 52 of the excavating bucket 49, the bottom members 52 being hinged to the body of the excavating bucket at 53. When the bottom members 52 are raised .to closed position, as illustrated in Figure 4 of the drawings, the sides of the bottom members 52 engage the lower portion of the body of the excavating bucket to press upwardly thereagainst. The bottom members 52 are provided with spiral cutting edges 54 which are spaced apart and in the customary manner, so that when the excavating bucket 49 is rotated, the cutting edges 54 will cut into the earth and the earth will pass into the body of the excavating bucket to be raised therewith.

Disposed at the lower portion of the casing 15 there are brackets 55 to which are pivoted hooks 56, the hooks 56 having arms 57 which are connected by links 58 with extending arms 59, best shown in Figures 7 and 8, on a shaft 60 which is journaled at 61 to brackets 62, the sh aft 60 having an upwardly extending rod 63, which is connected by a spring 64 with the casing 15 which serves to hold the hooks 56 yieldingly in the positions illustrated in Figure 4 of the drawings. Extending downwardly in the extending portion 22 of the shell body 21 there is a cable 66 which is secured to a cross bar 67 of the frame 29. There is also a cable which carries conductors connected to the electric motor 30.

As best shown in Figures 4 and 5 of the drawings, the cross bar 32 has guideways 67 in which plungers 68 are adapted to move, the plungers 68 being held yieldingiy extended in the said guideways 67 by springs 69. Mounted on the plungers 68 there are rollers 70 Which normally ext-end through openings 71 in the shell body 21. The plungers 68 have pins 71 which move in slots 72 in the cross bar 32 to limit the movement of the plungers relatively to the cross bar.

When using the boring machine, the beams 16 and 17 are moved to dispose the shell body 21 and the casing 15 over the position where the machine is to be used, when the cable 66 is lowered to permit the downward movement of the shell body 21 and the excavating bucket 49 relatively to the casing, this downward movement of the shell body and the bucket being permitted by the telescopic members which have been described, the said telescopic members serving to prevent the rotation of the shell body 21 relatively to the casing 15. When the excavating body is disposed at the position where the machine is to be used, a circuit is closed through the cable 65, which energizes the electric motor, which, because of the angularity of the sha t 36 which fits the angularity of the bearing 45, serves to rotate the excavating bucket, the cutting edges 54 of the bottom members 52 cutting into the earth, which passes between the cut ting edges 54 into the excavating bucket.

When a suitable amount of earth or material is disposed in the excavating bucket 49, the cable 66 is raised, which draws upwardly the frame 29 and the shell body 21, inasmuch as the frame 29 is secured to the shell body 21 by means of the plungers 68 which are disposed in the openings 71, and the excavating bucket 49, inasmuch as the excavating bucket is secured to the frame 29 through the shaft 36. This upward movement of the shell body 21 and the excavating bucket 49 will continue with the shell body 21 passing within the casing 15, the guide members 73 engaging the bottom of the casing 15 to guide the shell body 21 therein. W hen the shell body 21 is disnosed within the casing 15. as illustrated in Figure the hooks will engage the bottom of the shell bodv 21. as illustra ted in Figure 5. and support the shell body. b en the rollers 70 reach the ca sin 15. th ey press inwardly the plungers 68 to free the frame 29 from the shell bodv 21. but as the frame 29 is disposed at the steps 74. and the upward movement of the shaft 36 carries upwardly the excavating bucket 49 through the rods or members which engage the bottom of the body of the excavating bucket, this upward movement of the cable 66 serves not only to move the frame 29 and the excavating bucket 49 upwardly, but also the shell body 21. When the shell body 21 is supported by the hooks 56, as illustrated in Figure 5, the cable may be permitted to descend suddenly, thereby permitting the frame 29 to move downwardly relatively to the shell body 21, this sudden downward movement of the frame 29 carrying with it the shaft 36, which is connected with the bottom members 52, the weight of the material resting on the bottom members 52 serving to open the bottom members 52. as illustrated in Figure 5, permitting the dumping of the contents of the excavating bucket.

The cable is then preferably again drawn. upwardly until the frame is again disposed at the stops 7 4., when the hooks 56 are freed manually or by a lanyard secured to any convenient part or parts, when the cable 66 is again permitted to descend and the frame 29 passes out of the bottom of the casing 15, the rollers 70 moving outwardly and the plungers 68 moving into the openings 71, when the said rollers and plungers move below the bottom of the casing 15. The excavating bucket 4-9 is then again disposed at the material which is to be bored and the electric motor is again energized to repeat the cycle.

In the form of the invention illustrated in Figures 10 and 11 of the drawings, the shell body has guide members 76 for directing the shell body into the casing 77. the shell body 75 having an opening 78 in which there is bearing member 79 which is secured to an excavating bucket 80 and also to a disc 81 disposed in the shell body 7 5, the disc 81 having a flange 82 with inner teeth 83 which mesh with a gear 84 pivoted. in a bearing 85 in apartition 86 secured to the shell body, an electric motor 87 being secured to the shell body and having a shaft 88 with a gear 89 which meshes with the gear 8 1. In this manner the electric motor 87 serves to rotate the excavating bucket 80, the bottom members 90 of the excavating bucket being connected. by links 91 with a shaft 92 which is disposed through openings in the bearing member 79, the disc 81 and the partition 86. a cross-bar 93 being secured to the shaft 92 in the extension 94: of the shell bodv 75. lhis cross-bar 93 has openin s 95 in which are disposed plungers 96 having rollers 97 mounted thereon, the plungers 96 and the rollers 97 extending throu h onenings 98 in the extension 94 of the shell. body 7 5. The plungers Hooks 101 are mounted on the bottom of the casing 77 in the manner described with reference to the form of the invention illustrated in Figures 4: and 5 of the drawings. With this construction, when the shell body 75 moves into the casing 77, and the hooks 101 engage the bottom of the shell body 75, the rollers 97 will engage the top of the casing 77 at 102 and be moved inwardly there'- by to free the cross-bar 93 from the extension 94 of the shell body 75 and permit the lowering of the cable 66 and the bottom members 90 in the manner described, after which the hooks 101 may be freed from the shell body 7 5, either manually or by a lanyard, when the shell body 7 5 will be permitted to descend with the body of the excavating bucket 80 and relatively to the bottom members 90 to close the said bottom members 90 and permit the rollers 97 with the plungers 96 to be again disposed in the openings 98 in the ex tension 94 of the shell body 75.

By referring to Figure 9 of the drawings, it will be seen that the rollers 70 and 97 are disposed in portions 71 of the openings in the shell body and that the plungers are disposed in portions 71 of the said openings in the shell body, the inward movement of the rollers serving to move the plungers 68 inwardly a suflicient distance to free the plungers from the openings in the shell body.

What is claimed is:

1. In a boring machine, a shell body, an excavating bucket atthe shell body, the ex cavating bucket having hinged bottom members, a motor in the shell body for rotating the excavating bucket relatively to the shell body, acable, means connecting the hinged bottom members with the cable, a casing, and means for holding the cable relatively to the shell body, the said means being positioned for engagement with the casing to free the said means from the shell body.

2. In a boring machine, a shell body, an excavating bucket at the shell body, the excavating bucket having movable bottom members, a motor at the shell body, a cable, means connecting the movable bottom memhere with the cable, and means cooperating with the motor, the first mentioned means and the excavating bucket for rotating the excavating bucket relatively to the shell body.

3. In a boring machine, a shell body, an excavating bucket at the shell body, the excavating bucket having" movable bottom members, a motor at the shell body, a cable, means connecting the movable bottom members with the cable, means cooperating with the motor, the first mentioned means and the excavating bucket for rotating the excavating bucket relatively to the shell body, a casing in which the shell body is adapted to move, and hooks on the casing for engaging and holding the shell body.

4. In a boring machine, a shell body, an

excavating bucket at the shell body, the excavating bucket having movable bottom members, a motor at the shell body, a cable, means connecting the movable bottom'members with the cable, means cooperating with the motor, the first mentioned means and the excavating bucket for rotating the excavating bucket relatively to the shell body, a casing in which the shell body is adapted to move, hooks on the casing for engaging and holding the shell body, and means for detachably securing the first mentioned means to the shell body.

5. In a boring machine, a shell body, an excavating bucket at the shell body, the excavating bucket having movable bottom members, a motor at the shell body, a cable, means connecting the movable bottom members with the cable, means cooperating with the motor, the first mentioned means and the excavating bucket for rotating the excavating bucket relatively to the shell body, a casing in which the shell body is adapted to move, hooks on the casing for engaging and holding the shell body, and means for detachably securing the first mentioned means to the shell body, which are rendered inoperative by the casing.

6. In a boring machine, a shell body, an excavating bucket at the shell body, the exca vating bucket having movable bottom members, a motor in the shell body for rotating the excavating bucket. a cable, means connecting the cable with the bottom members, a casing in which the shell body is adapted to move, hooks on the casing for engaging and supporting the shell body, and means on the first mentioned means and disposed in the shell body for detachably securing the first mentioned means to the shell body.

7. In a boring machine, a shell body, an excavating bucket at the shell body, the excavating bucket having movable bottom members, a motor in the shell body for rotating the excavating bucketa cable. means connect ing the cable with the bottom members, a casing in which the shell body is adapted to move, hooks 011 the casing for engaging and supporting the shell body, and means on the first mentioned means and disposed in the shell body for detachably securing the first mentioned means to the shell body, the second mentioned means being positioned to be rendered inoperative by the casing.

8. In a boring machine, a shell body, an excavating bucket at the shell body, the excavating bucket having movable bottom members. a cable, means connecting the cable with the bottom members. a casing in which the shell body is adapted to move, hooks on the casing for engaging and supporting the shell body, the shell body having openings, and a cross bar on the said means with springpressed ends normally disposed in the openings and adapted to be moved inwardly therefrom by the casingl 9. In a boring machine, a shell body, an

excavating bucket having movable bottom members, a frame slidable in guideways in the shell body, a shaft connecting the frame with the excavating bucket for rotating the latter, a cable secured to the frame, there being openings in the shell body, spring-pressed members on the frame for disposal in the openings for detachably securing the frame relatively to the shell body, a casing for receiving the shell body and in which the cable extends, the spring-pressed members being positioned for engagement by the casing for rendering the spring-pressed members inoperative, and hooks on the casing for supporting the shell body.

10. In a boring machine, a shell body, an excavating bucket having movable bottom members, a frame slidable in guideways in the shell body, a shaft connecting the frame with the excavating bucket for rotating the latter, a cable secured to the frame, there being openings in the shell body, spring-pressed members on the frame for disposal in the openings for detachably securing the frame relatively to the shell body, a casing for receiving the shell body and in which the cable extends, the spring-pressed members being positioned for engagement by the casing for rendering the spring-pressed members inoperative, hooks on the casing for supporting the shell body, a motor mounted on the frame, and means connecting the motor with the shaft for operating the latter.

11. In a boring machine, a shell body having an extension, a bucket having movable bottom members, means in the shell body connected with the excavating bucket for rotating the latter, there being openings in the extension of the shell body, a cross bar in the said extension having spring-pressed members for detachably securing the cross bar to the said extension, means connecting the cross bar with the movable bottom members, a casing for receiving the shell body and having means for rendering the spring-pressed mem bers inoperative. and hooks on the casing for supporting the shell body.

12. In a boring machine, a shell body, an excavating bucket at the shell body to be rotated by means in the shell body. a casing for receiving the shell body. hooks on the easing for supporting the shell body when disposed in the casing, the shell body having openings, a cross bar having plungers for disposal in the openings to secure the cross bar to the shell. body, the plungers being positioned to be rendered inoperative by members at the casing, movable bottom members for the excavating bucket, a supporting cable for the cross bar, and means connecting the b ottom members with the cross bar.

13. In a boring machine, a shell body, an excavating bucket at the shell. body to be rotated by means in the shell body, a casing for receiving the shell body, hooks on the casing for supporting the shell body when disposed in the casing, the shell body having openings, a cross bar having resiliently-pressed plungers for disposal in the openings, rollers on the plungers for engaging a member on the casing to move the plungers into inoperative position, movable bottom members for the excavating bucket, a supporting cable for the cross bar, and means connecting the bottom members with the cross bar.

14. In a boring machine, a shell body, an excavating bucket at the shell body, a motor at the shell body, a casing for receiving the shell body, hooks on the casing for supporting the shell body when disposed in the casing, the shell body having openings, a cross bar having plungers for disposal in the openings to secure the cross bar to the shell body, the plungers being positioned to be rendered inoperative by members at the casing, movable bottom members for the excavating bucket, a supporting cable for the cross bar, means connecting the bottom members with the cross bar, and means cooperating with the motor, the first mentioned means and the excavating bucket for rotating the latter.

15. In a boring machine, a shell body, an excavating bucket at the shell body to be rotated by means in the shell body, a casing for receiving the shell body, hooks on the casing for supporting the shell body when disposed in the casing, the shell body having openings, a cross bar having plungers for disposal in the openings to secure the cross bar to the shell body, the plunger-s being positioned to be rendered inoperative by members at the casing, movable bottom members for the excavating bucket, a supporting cable for the cross bar, means connecting the bottom members with the cross bar, a beam and a telescopic connection between the beam and the casing which prevents the rotation of the casing relatively to the beam.

16. In a boring machine, an excavating bucket having movable bottom members and an extension, a cable, means connecting the cable with the bottom members, a casing, hooks at the casing for engaging and supporting the extension on the excavating bucket, the extension having an opening, and a cross bar on the said means with a spring-pressed end normally disposed in the opening and adapted to be moved inwardly therefrom by engagement with'the casing.

EDWARD T. SHINN. 

